Add Publish and Retry in Self-Service

• Updated POST '/:user/retry/:run_id' in self-service.rb to create new job with original job's is_private value and updated get_same_pending_jobs to consider is_private value as well.
• Updated self_service_history.erb to show Publish button only when user is logged in and accessing its own history.
• Added publish.erb to be the page to show selected private jobs from job_history with button to either publish or cancel.
• Added GET /:user/test/publish in self-service.rb to accept array of run_ids and pass private jobs data to publish.erb.
• Added POST /:user/test/publish to accept strings of run_ids separated with , from publish.erb and changing tha valid private jobs to public.
• Added/Updated tests of above in self_service_spec.rb.